Ore-pulverizing mill.



No. 761.266. l l PATENTEDMAY 31, 1904.'

' W.- TAYLOR.

ORE PULVERIZING MILL.

'APPLICATION FILED JAN. 13. 1903.

N0 MODEL. '2 SHEETS-SHEET 1.

PATLNTLL MAY a1, 1904.v w. TAYLOR. ORE PULVLRLZING MILL.

APPLICATION FILED JAN. 13 1903.

' 2 SHEETS-SHEET 2.

N0 MODEL.

` drawings, forming Patented May 31, 1904.

UNITED STATES PATENT OEEIcE. i

WALLER TAYLOR, OF LOS ANGELES, CALIFORNIA.

ORE-PULVERIZING MILL SPECIFICATION forming part of Letters Patent No. 761,266, dated May 31, 1904.

Application led January 13, 1903. Serial No. 138,925. (N0 mOdtL) To all whom, t may concern:

Be it known that I, WALLER TAYLOR, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented certain Improvements in Ore-Pulverizing Mills, of which the following is a specification.

My invention relates .to vore -pulverizing mills, and more particularly to pulverizingmills adapted for use in thel reduction ofl mineral-bearing rock to the' iineness requisite to insure the ready separation of the valuable minerals from the gangue.

More particularly, this invention relates to further improvements in the device disclosed in my application, Serial No. 139,924, filed January 13, 1903. The object of the invention is to provide a pulveriZing-mill comprising a revoluble mortar havinga crushing-bed upon which crushing-rolls yieldinglybear and in the provision of extending simple, cheap, durable, positive, and leiiicient means to keep the mortar centered and to guide the mortar in a regular or.

side thrust of the mortarfrevolving means.

Further objects will appear from the detail description of construction' and operation.

To these ends the invention consists'in the constructions and combinations of parts hereinafter described, and particularly pointed out in the claims, and will be more readily ,understood by reference to the accompanying part of this' specification, in which- Y Figure I is a sectional view of an orepul verizing mill embodying my invention. /Fig II is a detail plan view of the mortar, mortar-centering ring, and revolving bearing de- Vices therefor. Fig. III is a fragmental plan view of a portion of the mortar, the mortarcentering ring, and one of the revolving bearing and centering devices. Fig. IV is a section on line IV IV, Fig. III.

As shown in the drawings, two series of posts 3 3 and 4 4, equal in number, are arranged in pairs upon a base-plate 2. The

posts 3 3 are located near the center of the plate, while the'posts 4 4 are located at the outer edge of the base-plate 2.

5 5 represent boxes in which the ends of the shafts 6 6 are mounted. The boxes 5 5 are slidably arranged in their respective posts 3 4 and are supported on springs 11, which rest on stationary supports 12, provided on the respective posts 3 4. Springs 10 bear upon the top of the boxes 5, and their upper ends engage the followers 13, slidinglymounted on the posts and engaged by tension-screws 14, passing through caps 15 at the tops of the posts. The upper extremities of the tensionscrews 14 are provided with hand-wheels 16, by which the tension of the springs 10 may be adjusted. The shafts 6 are therefore held in position by a yielding pressure controlled by the tension of the springs 10 11. The pulveriZing-rollers 7 are made Yfast upon the shafts 6. As shown, these rollers 7 are preferably provided with detachable hardened tires or wearing parts 8, attached to theinner body portion 7 by means of locking-keys 9 or other suitable means.

Located between the inner series of posts 3 and the outer series of posts 4 is a revoluble mortar 17. This mortar is preferably provided with a detachable bed-plate 18, which is engaged by the roller 7 and forms the pulverizing-surface. This bed-plate 18 is preferably of hardened material. The mortar 17 is supported upon conical rollers 19, engaging a track of corresponding shape formed on the bottom of the mortar, whereby a perfect rolling contact between the rollers and the mortar is formed, thus reducing the friction to a minimum. The rollers 19 are journaled in suitable boxes 20, mounted on a stationary base-plate 2.

21 21 represent arms provided with flanges 22, through which bolts 23 pass into the mortar 17, securing the arms thereon. vBrackets 24 24 are connected with the respective arms 21, as shown, the connection preferably being by means of a set-screw 25, adapted Yto pass through the slots 24' in the yoke 28 of the bracket and engaging a threaded'opening in the arm 2 1. The slots 24 are preferably madeof sufficient length to provide for theV IOO necessary adjustment of the brackets 24 on the arm 21. The brackets 24 are attached to the mortar-centering ring 26 by means of suitable bolts 28. This mortar-centering ring is preferably provided with an inclined bearing-face 27.

A series of lugs or projections 29 are formed on the posts 3. These lugs or projections preferably extend between respective pairs of posts 3. Two arms 30 are secured on each lug or projection 29. If desired, these arms may be cast integral with the lugs or projections 29, but are shown in the drawings as bolted thereto. Conical rollers 3l have their shafts 3l' mounted in bearings in the arms 30. The pitch of the .rollers 31 corresponds to the pitch of the inclined face 27 of the mortar-centering ring.

As the mortar revolves the face 27 bears against the inclined faces 31a of the rollers 3l, the rollers revolving, all friction is avoided, while the ring is held truly centered and caused to revolve in a uniform path or orbit. The inclination of the faces 31a and 27 aids in supporting the mortar centering ring and therewith the revoluble mortar.

32 represents a gear by means of which the mortar 17 is revolved. This gear 32 engages a large ring-gear 33, attached to the bottom of the mortar. This gear 32 is fixed on a shaft 34, to the outer end of which is attached a suitable pulley 35, connected in a suitable manner with a suitable motive power. (Not shown.) The shaft 34 is journaled in suitable bearings mounted on the base-plate 2.

The outer wall of the mortar is outwardly inclined, and it extends upwardly from the base-plate, as shown at 17', and is provided with a horizontal ledge 18 of considerable width, beyond which is located a screen 36 of suitable mesh.

A circular amalgamating-trough 37, supported on the posts 4, surrounds the mortar and is arranged to receive the material therefrom as it passes through the screen 36. It is thus seen that I provide simple and eflcient means for keeping the revoluble mortar centered and preventing the side thrust of the gear 32, effectuating the lateral displacement of the mortar. It is also seen that any wear may be readily taken up by means of the adjustment of the brackets 24 upon the arms 21.

What I claim, and desire to secure by Letters Patent of the United States, is-

1. The combination, in a pulveriZing-mill, of outer and inner series of posts, an annular revoluble mortar located between the two series of posts, said mortar provided upon its bottom with a ring-gear, a driving-gear operating in connection therewith, means for operating said driving-gear, conical rollers supportingsaid mortar, a mortar-centering ring provided on said mortar, a roller-bearing means provided upon said inner series of posts,

said mortarcentering ring and said roller means provided with coperating faces oppositely inclined with respect to the mortar-axisI and adapted to bear one against the other,

whereby said mortar is held against lateral displacement.

2. The combination, in a pulverizing-mill, of outer and inner series of posts, an annular revoluble mortar located between said series of posts, said mortar provided on its under surface with a ring-gear, a driving-gear operating in connection therewith, means for operating said driving-gear, rollers upon which said mortar revolves, said mortar provided with an inwardly-extending mortar-centering ring adjustably secured thereon, said ring provided with a face inclined with respect to the mortar-axis, and a series of conical rollers provided between respective pairs of inner posts, the inclined surface of said mortar-centering ring adapted to bear against the conical faces of said rollers.

3. The combination, in a pulverizing-mill, with a series of inner and a series of outer posts, of an annular revoluble mortar, a mortar-centering ring extending inwardly from said mortar and provided with a contacting face inclined with respect to the mortar-axis, a series of rollers mounted upon said inner series of posts and extending out therefrom, said rollers provided with faces oppositely inclined with respect to the inclined face'of said mortar-centerin g ring adapted to contact with the contacting face of the surrounding mortar-centering ring, means for revolving said mortar, revoluble supporting means for said mortar, and pulverizingrolls coperating with said mortar.

4. The combination, in a pulveriZing-mill, with a series of inner and a series of outer posts, of an annular revoluble mortar, a mortar-centering ring adjustably secured on said mortar and extending inwardly from said mortar and provided with a contacting face inclined with respect to the mortar-axis, a series of rollers mounted upon said inner series of posts and extending out therefrom, said rollers provided with faces oppositely inclined with respect to the-inclined face of said mortar-centering ring adapted to contact with the contacting face of the surrounding mortar-centering ring, means for revolving said mortar, revoluble supporting means for said mortar,and pulverizing-rolls coperating with said mortar.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, at Los Angeles, in the county of Los Angeles and State of California, this 7th day of January, 1903.

WALLER TAYLOR.

Witnesses:

FREDERICK S. LYON, JAMES R. TowivsENDo IOO IIO 

